Pump action of handle quickly secures lockouts to breaker switch. This unique design allows for the fastest lockout application time and quick and easy removal as well. The unit uses metal jaws for an optimum secure grip, and the visible safety red calls attention to the locked out switch. Easily apply with just one hand if needed. The octagon peg allows specially designed Tab Tags (sold separately) to be secured directly to the device. Accommodates up to 9/32" diameter padlock shackles (sold separately).